update

app.py

@@ -3,5 +3,5 @@ import gradio as gr
 def add(number1, number2):
     return number1 + number2
 
-demo = gr.Interface(fn=add, inputs=[number1, number2], outputs= number1 + number2)
+demo = gr.Interface(fn=add, inputs=["number", "number"], outputs= "number")
 demo.launch()